wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45 #include "mesh.h"
  46 #include "mesh_mpm.h"
  47 #include "wmm_ac.h"
  48
  49
  50 #ifndef CONFIG_NO_SCAN_PROCESSING
  51 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  52                                               int new_scan, int own_request);
  53 #endif /* CONFIG_NO_SCAN_PROCESSING */
  54
  55
  56 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  57                               struct wpa_ssid *ssid)
  58 {
  59         struct os_reltime now;
  60
  61         if (ssid == NULL || ssid->disabled_until.sec == 0)
  62                 return 0;
  63
  64         os_get_reltime(&now);
  65         if (ssid->disabled_until.sec > now.sec)
  66                 return ssid->disabled_until.sec - now.sec;
  67
  68         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  69
  70         return 0;
  71 }
  72
  73
  74 static struct wpa_bss * wpa_supplicant_get_new_bss(
  75         struct wpa_supplicant *wpa_s, const u8 *bssid)
  76 {
  77         struct wpa_bss *bss = NULL;
  78         struct wpa_ssid *ssid = wpa_s->current_ssid;
  79
  80         if (ssid->ssid_len > 0)
  81                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  82         if (!bss)
  83                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  84
  85         return bss;
  86 }
  87
  88
  89 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
  90 {
  91         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  92
  93         if (!bss) {
  94                 wpa_supplicant_update_scan_results(wpa_s);
  95
  96                 /* Get the BSS from the new scan results */
  97                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  98         }
  99
 100         if (bss)
 101                 wpa_s->current_bss = bss;
 102 }
 103
 104
 105 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 106 {
 107         struct wpa_ssid *ssid, *old_ssid;
 108         int res;
 109
 110         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 111                 wpa_supplicant_update_current_bss(wpa_s);
 112                 return 0;
 113         }
 114
 115         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 116                 "information");
 117         ssid = wpa_supplicant_get_ssid(wpa_s);
 118         if (ssid == NULL) {
 119                 wpa_msg(wpa_s, MSG_INFO,
 120                         "No network configuration found for the current AP");
 121                 return -1;
 122         }
 123
 124         if (wpas_network_disabled(wpa_s, ssid)) {
 125                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 126                 return -1;
 127         }
 128
 129         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 130             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 131                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 132                 return -1;
 133         }
 134
 135         res = wpas_temp_disabled(wpa_s, ssid);
 136         if (res > 0) {
 137                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 138                         "disabled for %d second(s)", res);
 139                 return -1;
 140         }
 141
 142         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 143                 "current AP");
 144         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 145                 u8 wpa_ie[80];
 146                 size_t wpa_ie_len = sizeof(wpa_ie);
 147                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 148                                               wpa_ie, &wpa_ie_len) < 0)
 149                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 150         } else {
 151                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 152         }
 153
 154         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 155                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 156         old_ssid = wpa_s->current_ssid;
 157         wpa_s->current_ssid = ssid;
 158
 159         wpa_supplicant_update_current_bss(wpa_s);
 160
 161         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 162         wpa_supplicant_initiate_eapol(wpa_s);
 163         if (old_ssid != wpa_s->current_ssid)
 164                 wpas_notify_network_changed(wpa_s);
 165
 166         return 0;
 167 }
 168
 169
 170 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 171 {
 172         struct wpa_supplicant *wpa_s = eloop_ctx;
 173
 174         if (wpa_s->countermeasures) {
 175                 wpa_s->countermeasures = 0;
 176                 wpa_drv_set_countermeasures(wpa_s, 0);
 177                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 178
 179                 /*
 180                  * It is possible that the device is sched scanning, which means
 181                  * that a connection attempt will be done only when we receive
 182                  * scan results. However, in this case, it would be preferable
 183                  * to scan and connect immediately, so cancel the sched_scan and
 184                  * issue a regular scan flow.
 185                  */
 186                 wpa_supplicant_cancel_sched_scan(wpa_s);
 187                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 188         }
 189 }
 190
 191
 192 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 193 {
 194         int bssid_changed;
 195
 196         wnm_bss_keep_alive_deinit(wpa_s);
 197
 198 #ifdef CONFIG_IBSS_RSN
 199         ibss_rsn_deinit(wpa_s->ibss_rsn);
 200         wpa_s->ibss_rsn = NULL;
 201 #endif /* CONFIG_IBSS_RSN */
 202
 203 #ifdef CONFIG_AP
 204         wpa_supplicant_ap_deinit(wpa_s);
 205 #endif /* CONFIG_AP */
 206
 207         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 208                 return;
 209
 210         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 211         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 212         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 213         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 214         sme_clear_on_disassoc(wpa_s);
 215 #ifdef CONFIG_P2P
 216         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 217 #endif /* CONFIG_P2P */
 218         wpa_s->current_bss = NULL;
 219         wpa_s->assoc_freq = 0;
 220
 221         if (bssid_changed)
 222                 wpas_notify_bssid_changed(wpa_s);
 223
 224         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 225         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 226         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 227                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 228         wpa_s->ap_ies_from_associnfo = 0;
 229         wpa_s->current_ssid = NULL;
 230         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 231         wpa_s->key_mgmt = 0;
 232
 233         wpas_rrm_reset(wpa_s);
 234 }
 235
 236
 237 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 238 {
 239         struct wpa_ie_data ie;
 240         int pmksa_set = -1;
 241         size_t i;
 242
 243         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 244             ie.pmkid == NULL)
 245                 return;
 246
 247         for (i = 0; i < ie.num_pmkid; i++) {
 248                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 249                                                     ie.pmkid + i * PMKID_LEN,
 250                                                     NULL, NULL, 0);
 251                 if (pmksa_set == 0) {
 252                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
 253                         break;
 254                 }
 255         }
 256
 257         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 258                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 259 }
 260
 261
 262 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 263                                                  union wpa_event_data *data)
 264 {
 265         if (data == NULL) {
 266                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 267                         "event");
 268                 return;
 269         }
 270         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 271                 " index=%d preauth=%d",
 272                 MAC2STR(data->pmkid_candidate.bssid),
 273                 data->pmkid_candidate.index,
 274                 data->pmkid_candidate.preauth);
 275
 276         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 277                             data->pmkid_candidate.index,
 278                             data->pmkid_candidate.preauth);
 279 }
 280
 281
 282 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 283 {
 284         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 285             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 286                 return 0;
 287
 288 #ifdef IEEE8021X_EAPOL
 289         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 290             wpa_s->current_ssid &&
 291             !(wpa_s->current_ssid->eapol_flags &
 292               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 293                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 294                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 295                  * plaintext or static WEP keys). */
 296                 return 0;
 297         }
 298 #endif /* IEEE8021X_EAPOL */
 299
 300         return 1;
 301 }
 302
 303
 304 /**
 305  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 306  * @wpa_s: pointer to wpa_supplicant data
 307  * @ssid: Configuration data for the network
 308  * Returns: 0 on success, -1 on failure
 309  *
 310  * This function is called when starting authentication with a network that is
 311  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 312  */
 313 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 314                               struct wpa_ssid *ssid)
 315 {
 316 #ifdef IEEE8021X_EAPOL
 317 #ifdef PCSC_FUNCS
 318         int aka = 0, sim = 0;
 319
 320         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 321             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 322                 return 0;
 323
 324         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 325                 sim = 1;
 326                 aka = 1;
 327         } else {
 328                 struct eap_method_type *eap = ssid->eap.eap_methods;
 329                 while (eap->vendor != EAP_VENDOR_IETF ||
 330                        eap->method != EAP_TYPE_NONE) {
 331                         if (eap->vendor == EAP_VENDOR_IETF) {
 332                                 if (eap->method == EAP_TYPE_SIM)
 333                                         sim = 1;
 334                                 else if (eap->method == EAP_TYPE_AKA ||
 335                                          eap->method == EAP_TYPE_AKA_PRIME)
 336                                         aka = 1;
 337                         }
 338                         eap++;
 339                 }
 340         }
 341
 342         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 343                 sim = 0;
 344         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 345             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 346             NULL)
 347                 aka = 0;
 348
 349         if (!sim && !aka) {
 350                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 351                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 352                         "enabled");
 353                 return 0;
 354         }
 355
 356         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 357                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 358
 359         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 360         if (wpa_s->scard == NULL) {
 361                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 362                         "(pcsc-lite)");
 363                 return -1;
 364         }
 365         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 366         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 367 #endif /* PCSC_FUNCS */
 368 #endif /* IEEE8021X_EAPOL */
 369
 370         return 0;
 371 }
 372
 373
 374 #ifndef CONFIG_NO_SCAN_PROCESSING
 375
 376 static int has_wep_key(struct wpa_ssid *ssid)
 377 {
 378         int i;
 379
 380         for (i = 0; i < NUM_WEP_KEYS; i++) {
 381                 if (ssid->wep_key_len[i])
 382                         return 1;
 383         }
 384
 385         return 0;
 386 }
 387
 388
 389 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 390                                         struct wpa_ssid *ssid)
 391 {
 392         int privacy = 0;
 393
 394         if (ssid->mixed_cell)
 395                 return 1;
 396
 397 #ifdef CONFIG_WPS
 398         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 399                 return 1;
 400 #endif /* CONFIG_WPS */
 401
 402         if (has_wep_key(ssid))
 403                 privacy = 1;
 404
 405 #ifdef IEEE8021X_EAPOL
 406         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 407             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 408                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 409                 privacy = 1;
 410 #endif /* IEEE8021X_EAPOL */
 411
 412         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 413                 privacy = 1;
 414
 415         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 416                 privacy = 1;
 417
 418         if (bss->caps & IEEE80211_CAP_PRIVACY)
 419                 return privacy;
 420         return !privacy;
 421 }
 422
 423
 424 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 425                                          struct wpa_ssid *ssid,
 426                                          struct wpa_bss *bss)
 427 {
 428         struct wpa_ie_data ie;
 429         int proto_match = 0;
 430         const u8 *rsn_ie, *wpa_ie;
 431         int ret;
 432         int wep_ok;
 433
 434         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 435         if (ret >= 0)
 436                 return ret;
 437
 438         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 439         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 440                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 441                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 442                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 443
 444         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 445         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 446                 proto_match++;
 447
 448                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 449                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 450                                 "failed");
 451                         break;
 452                 }
 453
 454                 if (wep_ok &&
 455                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 456                 {
 457                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 458                                 "in RSN IE");
 459                         return 1;
 460                 }
 461
 462                 if (!(ie.proto & ssid->proto)) {
 463                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 464                                 "mismatch");
 465                         break;
 466                 }
 467
 468                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 469                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 470                                 "cipher mismatch");
 471                         break;
 472                 }
 473
 474                 if (!(ie.group_cipher & ssid->group_cipher)) {
 475                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 476                                 "cipher mismatch");
 477                         break;
 478                 }
 479
 480                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 481                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 482                                 "mismatch");
 483                         break;
 484                 }
 485
 486 #ifdef CONFIG_IEEE80211W
 487                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 488                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 489                     MGMT_FRAME_PROTECTION_REQUIRED) {
 490                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 491                                 "frame protection");
 492                         break;
 493                 }
 494 #endif /* CONFIG_IEEE80211W */
 495
 496                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 497                 return 1;
 498         }
 499
 500         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 501         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 502                 proto_match++;
 503
 504                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 505                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 506                                 "failed");
 507                         break;
 508                 }
 509
 510                 if (wep_ok &&
 511                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 512                 {
 513                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 514                                 "in WPA IE");
 515                         return 1;
 516                 }
 517
 518                 if (!(ie.proto & ssid->proto)) {
 519                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 520                                 "mismatch");
 521                         break;
 522                 }
 523
 524                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 525                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 526                                 "cipher mismatch");
 527                         break;
 528                 }
 529
 530                 if (!(ie.group_cipher & ssid->group_cipher)) {
 531                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 532                                 "cipher mismatch");
 533                         break;
 534                 }
 535
 536                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 537                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 538                                 "mismatch");
 539                         break;
 540                 }
 541
 542                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 543                 return 1;
 544         }
 545
 546         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 547             !rsn_ie) {
 548                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 549                 return 1;
 550         }
 551
 552         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 553             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 554                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 555                 return 0;
 556         }
 557
 558         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 559             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 560                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 561                 return 1;
 562         }
 563
 564         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 565                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 566                 return 1;
 567         }
 568
 569         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 570                 "WPA/WPA2");
 571
 572         return 0;
 573 }
 574
 575
 576 static int freq_allowed(int *freqs, int freq)
 577 {
 578         int i;
 579
 580         if (freqs == NULL)
 581                 return 1;
 582
 583         for (i = 0; freqs[i]; i++)
 584                 if (freqs[i] == freq)
 585                         return 1;
 586         return 0;
 587 }
 588
 589
 590 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 591 {
 592         const struct hostapd_hw_modes *mode = NULL, *modes;
 593         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 594         const u8 *rate_ie;
 595         int i, j, k;
 596
 597         if (bss->freq == 0)
 598                 return 1; /* Cannot do matching without knowing band */
 599
 600         modes = wpa_s->hw.modes;
 601         if (modes == NULL) {
 602                 /*
 603                  * The driver does not provide any additional information
 604                  * about the utilized hardware, so allow the connection attempt
 605                  * to continue.
 606                  */
 607                 return 1;
 608         }
 609
 610         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 611                 for (j = 0; j < modes[i].num_channels; j++) {
 612                         int freq = modes[i].channels[j].freq;
 613                         if (freq == bss->freq) {
 614                                 if (mode &&
 615                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 616                                         break; /* do not allow 802.11b replace
 617                                                 * 802.11g */
 618                                 mode = &modes[i];
 619                                 break;
 620                         }
 621                 }
 622         }
 623
 624         if (mode == NULL)
 625                 return 0;
 626
 627         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 628                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 629                 if (rate_ie == NULL)
 630                         continue;
 631
 632                 for (j = 2; j < rate_ie[1] + 2; j++) {
 633                         int flagged = !!(rate_ie[j] & 0x80);
 634                         int r = (rate_ie[j] & 0x7f) * 5;
 635
 636                         /*
 637                          * IEEE Std 802.11n-2009 7.3.2.2:
 638                          * The new BSS Membership selector value is encoded
 639                          * like a legacy basic rate, but it is not a rate and
 640                          * only indicates if the BSS members are required to
 641                          * support the mandatory features of Clause 20 [HT PHY]
 642                          * in order to join the BSS.
 643                          */
 644                         if (flagged && ((rate_ie[j] & 0x7f) ==
 645                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 646                                 if (!ht_supported(mode)) {
 647                                         wpa_dbg(wpa_s, MSG_DEBUG,
 648                                                 "   hardware does not support "
 649                                                 "HT PHY");
 650                                         return 0;
 651                                 }
 652                                 continue;
 653                         }
 654
 655                         /* There's also a VHT selector for 802.11ac */
 656                         if (flagged && ((rate_ie[j] & 0x7f) ==
 657                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 658                                 if (!vht_supported(mode)) {
 659                                         wpa_dbg(wpa_s, MSG_DEBUG,
 660                                                 "   hardware does not support "
 661                                                 "VHT PHY");
 662                                         return 0;
 663                                 }
 664                                 continue;
 665                         }
 666
 667                         if (!flagged)
 668                                 continue;
 669
 670                         /* check for legacy basic rates */
 671                         for (k = 0; k < mode->num_rates; k++) {
 672                                 if (mode->rates[k] == r)
 673                                         break;
 674                         }
 675                         if (k == mode->num_rates) {
 676                                 /*
 677                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 678                                  * order to join a BSS all required rates
 679                                  * have to be supported by the hardware.
 680                                  */
 681                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 682                                         "not support required rate %d.%d Mbps",
 683                                         r / 10, r % 10);
 684                                 return 0;
 685                         }
 686                 }
 687         }
 688
 689         return 1;
 690 }
 691
 692
 693 /*
 694  * Test whether BSS is in an ESS.
 695  * This is done differently in DMG (60 GHz) and non-DMG bands
 696  */
 697 static int bss_is_ess(struct wpa_bss *bss)
 698 {
 699         if (bss_is_dmg(bss)) {
 700                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 701                         IEEE80211_CAP_DMG_AP;
 702         }
 703
 704         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 705                 IEEE80211_CAP_ESS);
 706 }
 707
 708
 709 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
 710 {
 711         size_t i;
 712
 713         for (i = 0; i < ETH_ALEN; i++) {
 714                 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
 715                         return 0;
 716         }
 717         return 1;
 718 }
 719
 720
 721 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
 722 {
 723         size_t i;
 724
 725         for (i = 0; i < num; i++) {
 726                 const u8 *a = list + i * ETH_ALEN * 2;
 727                 const u8 *m = a + ETH_ALEN;
 728
 729                 if (match_mac_mask(a, addr, m))
 730                         return 1;
 731         }
 732         return 0;
 733 }
 734
 735
 736 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 737                                             int i, struct wpa_bss *bss,
 738                                             struct wpa_ssid *group,
 739                                             int only_first_ssid)
 740 {
 741         u8 wpa_ie_len, rsn_ie_len;
 742         int wpa;
 743         struct wpa_blacklist *e;
 744         const u8 *ie;
 745         struct wpa_ssid *ssid;
 746         int osen;
 747
 748         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 749         wpa_ie_len = ie ? ie[1] : 0;
 750
 751         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 752         rsn_ie_len = ie ? ie[1] : 0;
 753
 754         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 755         osen = ie != NULL;
 756
 757         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 758                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 759                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 760                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 761                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 762                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 763                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 764                 " p2p" : "",
 765                 osen ? " osen=1" : "");
 766
 767         e = wpa_blacklist_get(wpa_s, bss->bssid);
 768         if (e) {
 769                 int limit = 1;
 770                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 771                         /*
 772                          * When only a single network is enabled, we can
 773                          * trigger blacklisting on the first failure. This
 774                          * should not be done with multiple enabled networks to
 775                          * avoid getting forced to move into a worse ESS on
 776                          * single error if there are no other BSSes of the
 777                          * current ESS.
 778                          */
 779                         limit = 0;
 780                 }
 781                 if (e->count > limit) {
 782                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 783                                 "(count=%d limit=%d)", e->count, limit);
 784                         return NULL;
 785                 }
 786         }
 787
 788         if (bss->ssid_len == 0) {
 789                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 790                 return NULL;
 791         }
 792
 793         if (disallowed_bssid(wpa_s, bss->bssid)) {
 794                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 795                 return NULL;
 796         }
 797
 798         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 799                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 800                 return NULL;
 801         }
 802
 803         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 804
 805         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 806                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 807                 int res;
 808
 809                 if (wpas_network_disabled(wpa_s, ssid)) {
 810                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 811                         continue;
 812                 }
 813
 814                 res = wpas_temp_disabled(wpa_s, ssid);
 815                 if (res > 0) {
 816                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 817                                 "temporarily for %d second(s)", res);
 818                         continue;
 819                 }
 820
 821 #ifdef CONFIG_WPS
 822                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 823                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 824                                 "(WPS)");
 825                         continue;
 826                 }
 827
 828                 if (wpa && ssid->ssid_len == 0 &&
 829                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 830                         check_ssid = 0;
 831
 832                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 833                         /* Only allow wildcard SSID match if an AP
 834                          * advertises active WPS operation that matches
 835                          * with our mode. */
 836                         check_ssid = 1;
 837                         if (ssid->ssid_len == 0 &&
 838                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 839                                 check_ssid = 0;
 840                 }
 841 #endif /* CONFIG_WPS */
 842
 843                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 844                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 845                         check_ssid = 0;
 846
 847                 if (check_ssid &&
 848                     (bss->ssid_len != ssid->ssid_len ||
 849                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 850                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 851                         continue;
 852                 }
 853
 854                 if (ssid->bssid_set &&
 855                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 856                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 857                         continue;
 858                 }
 859
 860                 /* check blacklist */
 861                 if (ssid->num_bssid_blacklist &&
 862                     addr_in_list(bss->bssid, ssid->bssid_blacklist,
 863                                  ssid->num_bssid_blacklist)) {
 864                         wpa_dbg(wpa_s, MSG_DEBUG,
 865                                 "   skip - BSSID blacklisted");
 866                         continue;
 867                 }
 868
 869                 /* if there is a whitelist, only accept those APs */
 870                 if (ssid->num_bssid_whitelist &&
 871                     !addr_in_list(bss->bssid, ssid->bssid_whitelist,
 872                                   ssid->num_bssid_whitelist)) {
 873                         wpa_dbg(wpa_s, MSG_DEBUG,
 874                                 "   skip - BSSID not in whitelist");
 875                         continue;
 876                 }
 877
 878                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 879                         continue;
 880
 881                 if (!osen && !wpa &&
 882                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 883                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 884                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 885                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 886                                 "not allowed");
 887                         continue;
 888                 }
 889
 890                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 891                     has_wep_key(ssid)) {
 892                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 893                         continue;
 894                 }
 895
 896                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 897                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 898                                 "not allowed");
 899                         continue;
 900                 }
 901
 902                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 903                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 904                                 "mismatch");
 905                         continue;
 906                 }
 907
 908                 if (!bss_is_ess(bss)) {
 909                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 910                         continue;
 911                 }
 912
 913                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 914                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 915                                 "allowed");
 916                         continue;
 917                 }
 918
 919                 if (!rate_match(wpa_s, bss)) {
 920                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 921                                 "not match");
 922                         continue;
 923                 }
 924
 925 #ifdef CONFIG_P2P
 926                 if (ssid->p2p_group &&
 927                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 928                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 929                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 930                         continue;
 931                 }
 932
 933                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 934                         struct wpabuf *p2p_ie;
 935                         u8 dev_addr[ETH_ALEN];
 936
 937                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 938                         if (ie == NULL) {
 939                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 940                                 continue;
 941                         }
 942                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 943                                 bss, P2P_IE_VENDOR_TYPE);
 944                         if (p2p_ie == NULL) {
 945                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 946                                 continue;
 947                         }
 948
 949                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 950                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 951                                          ETH_ALEN) != 0) {
 952                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 953                                 wpabuf_free(p2p_ie);
 954                                 continue;
 955                         }
 956                         wpabuf_free(p2p_ie);
 957                 }
 958
 959                 /*
 960                  * TODO: skip the AP if its P2P IE has Group Formation
 961                  * bit set in the P2P Group Capability Bitmap and we
 962                  * are not in Group Formation with that device.
 963                  */
 964 #endif /* CONFIG_P2P */
 965
 966                 /* Matching configuration found */
 967                 return ssid;
 968         }
 969
 970         /* No matching configuration found */
 971         return NULL;
 972 }
 973
 974
 975 static struct wpa_bss *
 976 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 977                           struct wpa_ssid *group,
 978                           struct wpa_ssid **selected_ssid,
 979                           int only_first_ssid)
 980 {
 981         unsigned int i;
 982
 983         if (only_first_ssid)
 984                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 985                         group->id);
 986         else
 987                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 988                         group->priority);
 989
 990         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 991                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 992                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 993                                                     only_first_ssid);
 994                 if (!*selected_ssid)
 995                         continue;
 996                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 997                         " ssid='%s'",
 998                         MAC2STR(bss->bssid),
 999                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1000                 return bss;
1001         }
1002
1003         return NULL;
1004 }
1005
1006
1007 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1008                                              struct wpa_ssid **selected_ssid)
1009 {
1010         struct wpa_bss *selected = NULL;
1011         int prio;
1012         struct wpa_ssid *next_ssid = NULL;
1013
1014         if (wpa_s->last_scan_res == NULL ||
1015             wpa_s->last_scan_res_used == 0)
1016                 return NULL; /* no scan results from last update */
1017
1018         if (wpa_s->next_ssid) {
1019                 struct wpa_ssid *ssid;
1020
1021                 /* check that next_ssid is still valid */
1022                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1023                         if (ssid == wpa_s->next_ssid)
1024                                 break;
1025                 }
1026                 next_ssid = ssid;
1027                 wpa_s->next_ssid = NULL;
1028         }
1029
1030         while (selected == NULL) {
1031                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1032                         if (next_ssid && next_ssid->priority ==
1033                             wpa_s->conf->pssid[prio]->priority) {
1034                                 selected = wpa_supplicant_select_bss(
1035                                         wpa_s, next_ssid, selected_ssid, 1);
1036                                 if (selected)
1037                                         break;
1038                         }
1039                         selected = wpa_supplicant_select_bss(
1040                                 wpa_s, wpa_s->conf->pssid[prio],
1041                                 selected_ssid, 0);
1042                         if (selected)
1043                                 break;
1044                 }
1045
1046                 if (selected == NULL && wpa_s->blacklist &&
1047                     !wpa_s->countermeasures) {
1048                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1049                                 "blacklist and try again");
1050                         wpa_blacklist_clear(wpa_s);
1051                         wpa_s->blacklist_cleared++;
1052                 } else if (selected == NULL)
1053                         break;
1054         }
1055
1056         return selected;
1057 }
1058
1059
1060 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1061                                         int timeout_sec, int timeout_usec)
1062 {
1063         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1064                 /*
1065                  * No networks are enabled; short-circuit request so
1066                  * we don't wait timeout seconds before transitioning
1067                  * to INACTIVE state.
1068                  */
1069                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1070                         "since there are no enabled networks");
1071                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1072                 return;
1073         }
1074
1075         wpa_s->scan_for_connection = 1;
1076         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1077 }
1078
1079
1080 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1081                            struct wpa_bss *selected,
1082                            struct wpa_ssid *ssid)
1083 {
1084         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1085                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1086                         "PBC session overlap");
1087 #ifdef CONFIG_P2P
1088                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1089                     wpa_s->p2p_in_provisioning) {
1090                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1091                                                wpa_s, NULL);
1092                         return -1;
1093                 }
1094 #endif /* CONFIG_P2P */
1095
1096 #ifdef CONFIG_WPS
1097                 wpas_wps_cancel(wpa_s);
1098 #endif /* CONFIG_WPS */
1099                 return -1;
1100         }
1101
1102         wpa_msg(wpa_s, MSG_DEBUG,
1103                 "Considering connect request: reassociate: %d  selected: "
1104                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1105                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1106                 wpa_s->reassociate, MAC2STR(selected->bssid),
1107                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1108                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1109                 ssid, wpa_s->current_ssid);
1110
1111         /*
1112          * Do not trigger new association unless the BSSID has changed or if
1113          * reassociation is requested. If we are in process of associating with
1114          * the selected BSSID, do not trigger new attempt.
1115          */
1116         if (wpa_s->reassociate ||
1117             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1118              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1119                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1120               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1121                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1122                0) ||
1123               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1124                ssid != wpa_s->current_ssid)))) {
1125                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1126                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1127                         return 0;
1128                 }
1129                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1130                         MAC2STR(selected->bssid));
1131                 wpa_supplicant_associate(wpa_s, selected, ssid);
1132         } else {
1133                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1134                         "connect with the selected AP");
1135         }
1136
1137         return 0;
1138 }
1139
1140
1141 static struct wpa_ssid *
1142 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1143 {
1144         int prio;
1145         struct wpa_ssid *ssid;
1146
1147         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1148                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1149                 {
1150                         if (wpas_network_disabled(wpa_s, ssid))
1151                                 continue;
1152                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1153                             ssid->mode == IEEE80211_MODE_AP ||
1154                             ssid->mode == IEEE80211_MODE_MESH)
1155                                 return ssid;
1156                 }
1157         }
1158         return NULL;
1159 }
1160
1161
1162 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1163  * on BSS added and BSS changed events */
1164 static void wpa_supplicant_rsn_preauth_scan_results(
1165         struct wpa_supplicant *wpa_s)
1166 {
1167         struct wpa_bss *bss;
1168
1169         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1170                 return;
1171
1172         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1173                 const u8 *ssid, *rsn;
1174
1175                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1176                 if (ssid == NULL)
1177                         continue;
1178
1179                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1180                 if (rsn == NULL)
1181                         continue;
1182
1183                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1184         }
1185
1186 }
1187
1188
1189 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1190                                        struct wpa_bss *selected,
1191                                        struct wpa_ssid *ssid)
1192 {
1193         struct wpa_bss *current_bss = NULL;
1194         int min_diff;
1195
1196         if (wpa_s->reassociate)
1197                 return 1; /* explicit request to reassociate */
1198         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1199                 return 1; /* we are not associated; continue */
1200         if (wpa_s->current_ssid == NULL)
1201                 return 1; /* unknown current SSID */
1202         if (wpa_s->current_ssid != ssid)
1203                 return 1; /* different network block */
1204
1205         if (wpas_driver_bss_selection(wpa_s))
1206                 return 0; /* Driver-based roaming */
1207
1208         if (wpa_s->current_ssid->ssid)
1209                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1210                                           wpa_s->current_ssid->ssid,
1211                                           wpa_s->current_ssid->ssid_len);
1212         if (!current_bss)
1213                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1214
1215         if (!current_bss)
1216                 return 1; /* current BSS not seen in scan results */
1217
1218         if (current_bss == selected)
1219                 return 0;
1220
1221         if (selected->last_update_idx > current_bss->last_update_idx)
1222                 return 1; /* current BSS not seen in the last scan */
1223
1224 #ifndef CONFIG_NO_ROAMING
1225         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1226         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1227                 " level=%d snr=%d est_throughput=%u",
1228                 MAC2STR(current_bss->bssid), current_bss->level,
1229                 current_bss->snr, current_bss->est_throughput);
1230         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1231                 " level=%d snr=%d est_throughput=%u",
1232                 MAC2STR(selected->bssid), selected->level,
1233                 selected->snr, selected->est_throughput);
1234
1235         if (wpa_s->current_ssid->bssid_set &&
1236             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1237             0) {
1238                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1239                         "has preferred BSSID");
1240                 return 1;
1241         }
1242
1243         if (selected->est_throughput > current_bss->est_throughput + 5000) {
1244                 wpa_dbg(wpa_s, MSG_DEBUG,
1245                         "Allow reassociation - selected BSS has better estimated throughput");
1246                 return 1;
1247         }
1248
1249         if (current_bss->level < 0 && current_bss->level > selected->level) {
1250                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1251                         "signal level");
1252                 return 0;
1253         }
1254
1255         min_diff = 2;
1256         if (current_bss->level < 0) {
1257                 if (current_bss->level < -85)
1258                         min_diff = 1;
1259                 else if (current_bss->level < -80)
1260                         min_diff = 2;
1261                 else if (current_bss->level < -75)
1262                         min_diff = 3;
1263                 else if (current_bss->level < -70)
1264                         min_diff = 4;
1265                 else
1266                         min_diff = 5;
1267         }
1268         if (abs(current_bss->level - selected->level) < min_diff) {
1269                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1270                         "in signal level");
1271                 return 0;
1272         }
1273
1274         return 1;
1275 #else /* CONFIG_NO_ROAMING */
1276         return 0;
1277 #endif /* CONFIG_NO_ROAMING */
1278 }
1279
1280
1281 /* Return != 0 if no scan results could be fetched or if scan results should not
1282  * be shared with other virtual interfaces. */
1283 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1284                                               union wpa_event_data *data,
1285                                               int own_request)
1286 {
1287         struct wpa_scan_results *scan_res = NULL;
1288         int ret = 0;
1289         int ap = 0;
1290 #ifndef CONFIG_NO_RANDOM_POOL
1291         size_t i, num;
1292 #endif /* CONFIG_NO_RANDOM_POOL */
1293
1294 #ifdef CONFIG_AP
1295         if (wpa_s->ap_iface)
1296                 ap = 1;
1297 #endif /* CONFIG_AP */
1298
1299         wpa_supplicant_notify_scanning(wpa_s, 0);
1300
1301         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1302                                                    data ? &data->scan_info :
1303                                                    NULL, 1);
1304         if (scan_res == NULL) {
1305                 if (wpa_s->conf->ap_scan == 2 || ap ||
1306                     wpa_s->scan_res_handler == scan_only_handler)
1307                         return -1;
1308                 if (!own_request)
1309                         return -1;
1310                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1311                         "scanning again");
1312                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1313                 ret = -1;
1314                 goto scan_work_done;
1315         }
1316
1317 #ifndef CONFIG_NO_RANDOM_POOL
1318         num = scan_res->num;
1319         if (num > 10)
1320                 num = 10;
1321         for (i = 0; i < num; i++) {
1322                 u8 buf[5];
1323                 struct wpa_scan_res *res = scan_res->res[i];
1324                 buf[0] = res->bssid[5];
1325                 buf[1] = res->qual & 0xff;
1326                 buf[2] = res->noise & 0xff;
1327                 buf[3] = res->level & 0xff;
1328                 buf[4] = res->tsf & 0xff;
1329                 random_add_randomness(buf, sizeof(buf));
1330         }
1331 #endif /* CONFIG_NO_RANDOM_POOL */
1332
1333         if (own_request && wpa_s->scan_res_handler &&
1334             (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) {
1335                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1336                                          struct wpa_scan_results *scan_res);
1337
1338                 scan_res_handler = wpa_s->scan_res_handler;
1339                 wpa_s->scan_res_handler = NULL;
1340                 scan_res_handler(wpa_s, scan_res);
1341                 ret = -2;
1342                 goto scan_work_done;
1343         }
1344
1345         if (ap) {
1346                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1347 #ifdef CONFIG_AP
1348                 if (wpa_s->ap_iface->scan_cb)
1349                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1350 #endif /* CONFIG_AP */
1351                 goto scan_work_done;
1352         }
1353
1354         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1355                 wpa_s->own_scan_running, wpa_s->radio->external_scan_running);
1356         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1357             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1358                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1359                              wpa_s->manual_scan_id);
1360                 wpa_s->manual_scan_use_id = 0;
1361         } else {
1362                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1363         }
1364         wpas_notify_scan_results(wpa_s);
1365
1366         wpas_notify_scan_done(wpa_s, 1);
1367
1368         if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) {
1369                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1370                 wpa_scan_results_free(scan_res);
1371                 return 0;
1372         }
1373
1374         if (wnm_scan_process(wpa_s, 1) > 0)
1375                 goto scan_work_done;
1376
1377         if (sme_proc_obss_scan(wpa_s) > 0)
1378                 goto scan_work_done;
1379
1380         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1381                 goto scan_work_done;
1382
1383         if (autoscan_notify_scan(wpa_s, scan_res))
1384                 goto scan_work_done;
1385
1386         if (wpa_s->disconnected) {
1387                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1388                 goto scan_work_done;
1389         }
1390
1391         if (!wpas_driver_bss_selection(wpa_s) &&
1392             bgscan_notify_scan(wpa_s, scan_res) == 1)
1393                 goto scan_work_done;
1394
1395         wpas_wps_update_ap_info(wpa_s, scan_res);
1396
1397         wpa_scan_results_free(scan_res);
1398
1399         if (wpa_s->scan_work) {
1400                 struct wpa_radio_work *work = wpa_s->scan_work;
1401                 wpa_s->scan_work = NULL;
1402                 radio_work_done(work);
1403         }
1404
1405         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1406
1407 scan_work_done:
1408         wpa_scan_results_free(scan_res);
1409         if (wpa_s->scan_work) {
1410                 struct wpa_radio_work *work = wpa_s->scan_work;
1411                 wpa_s->scan_work = NULL;
1412                 radio_work_done(work);
1413         }
1414         return ret;
1415 }
1416
1417
1418 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1419                                               int new_scan, int own_request)
1420 {
1421         struct wpa_bss *selected;
1422         struct wpa_ssid *ssid = NULL;
1423
1424         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1425
1426         if (selected) {
1427                 int skip;
1428                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1429                 if (skip) {
1430                         if (new_scan)
1431                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1432                         return 0;
1433                 }
1434
1435                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1436                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1437                         return -1;
1438                 }
1439                 if (new_scan)
1440                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1441                 /*
1442                  * Do not notify other virtual radios of scan results since we do not
1443                  * want them to start other associations at the same time.
1444                  */
1445                 return 1;
1446         } else {
1447 #ifdef CONFIG_MESH
1448                 if (wpa_s->ifmsh) {
1449                         wpa_msg(wpa_s, MSG_INFO,
1450                                 "Avoiding join because we already joined a mesh group");
1451                         return 0;
1452                 }
1453 #endif /* CONFIG_MESH */
1454                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1455                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1456                 if (ssid) {
1457                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1458                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1459                         if (new_scan)
1460                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1461                 } else if (own_request) {
1462                         /*
1463                          * No SSID found. If SCAN results are as a result of
1464                          * own scan request and not due to a scan request on
1465                          * another shared interface, try another scan.
1466                          */
1467                         int timeout_sec = wpa_s->scan_interval;
1468                         int timeout_usec = 0;
1469 #ifdef CONFIG_P2P
1470                         int res;
1471
1472                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1473                         if (res == 2)
1474                                 return 2;
1475                         if (res == 1)
1476                                 return 0;
1477
1478                         if (wpa_s->p2p_in_provisioning ||
1479                             wpa_s->show_group_started ||
1480                             wpa_s->p2p_in_invitation) {
1481                                 /*
1482                                  * Use shorter wait during P2P Provisioning
1483                                  * state and during P2P join-a-group operation
1484                                  * to speed up group formation.
1485                                  */
1486                                 timeout_sec = 0;
1487                                 timeout_usec = 250000;
1488                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1489                                                             timeout_usec);
1490                                 return 0;
1491                         }
1492 #endif /* CONFIG_P2P */
1493 #ifdef CONFIG_INTERWORKING
1494                         if (wpa_s->conf->auto_interworking &&
1495                             wpa_s->conf->interworking &&
1496                             wpa_s->conf->cred) {
1497                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1498                                         "start ANQP fetch since no matching "
1499                                         "networks found");
1500                                 wpa_s->network_select = 1;
1501                                 wpa_s->auto_network_select = 1;
1502                                 interworking_start_fetch_anqp(wpa_s);
1503                                 return 1;
1504                         }
1505 #endif /* CONFIG_INTERWORKING */
1506 #ifdef CONFIG_WPS
1507                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1508                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1509                                 timeout_sec = 0;
1510                                 timeout_usec = 500000;
1511                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1512                                                             timeout_usec);
1513                                 return 0;
1514                         }
1515 #endif /* CONFIG_WPS */
1516                         if (wpa_supplicant_req_sched_scan(wpa_s))
1517                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1518                                                             timeout_usec);
1519                 }
1520         }
1521         return 0;
1522 }
1523
1524
1525 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1526                                              union wpa_event_data *data)
1527 {
1528         struct wpa_supplicant *ifs;
1529         int res;
1530
1531         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1532         if (res == 2) {
1533                 /*
1534                  * Interface may have been removed, so must not dereference
1535                  * wpa_s after this.
1536                  */
1537                 return 1;
1538         }
1539         if (res != 0) {
1540                 /*
1541                  * If no scan results could be fetched, then no need to
1542                  * notify those interfaces that did not actually request
1543                  * this scan. Similarly, if scan results started a new operation on this
1544                  * interface, do not notify other interfaces to avoid concurrent
1545                  * operations during a connection attempt.
1546                  */
1547                 return 0;
1548         }
1549
1550         /*
1551          * Check other interfaces to see if they share the same radio. If
1552          * so, they get updated with this same scan info.
1553          */
1554         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1555                          radio_list) {
1556                 if (ifs != wpa_s) {
1557                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1558                                    "sibling", ifs->ifname);
1559                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1560                 }
1561         }
1562
1563         return 0;
1564 }
1565
1566 #endif /* CONFIG_NO_SCAN_PROCESSING */
1567
1568
1569 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1570 {
1571 #ifdef CONFIG_NO_SCAN_PROCESSING
1572         return -1;
1573 #else /* CONFIG_NO_SCAN_PROCESSING */
1574         struct os_reltime now;
1575
1576         if (wpa_s->last_scan_res_used <= 0)
1577                 return -1;
1578
1579         os_get_reltime(&now);
1580         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1581                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1582                 return -1;
1583         }
1584
1585         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1586 #endif /* CONFIG_NO_SCAN_PROCESSING */
1587 }
1588
1589 #ifdef CONFIG_WNM
1590
1591 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1592 {
1593         struct wpa_supplicant *wpa_s = eloop_ctx;
1594
1595         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1596                 return;
1597
1598         if (!wpa_s->no_keep_alive) {
1599                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1600                            MAC2STR(wpa_s->bssid));
1601                 /* TODO: could skip this if normal data traffic has been sent */
1602                 /* TODO: Consider using some more appropriate data frame for
1603                  * this */
1604                 if (wpa_s->l2)
1605                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1606                                        (u8 *) "", 0);
1607         }
1608
1609 #ifdef CONFIG_SME
1610         if (wpa_s->sme.bss_max_idle_period) {
1611                 unsigned int msec;
1612                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1613                 if (msec > 100)
1614                         msec -= 100;
1615                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1616                                        wnm_bss_keep_alive, wpa_s, NULL);
1617         }
1618 #endif /* CONFIG_SME */
1619 }
1620
1621
1622 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1623                                    const u8 *ies, size_t ies_len)
1624 {
1625         struct ieee802_11_elems elems;
1626
1627         if (ies == NULL)
1628                 return;
1629
1630         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1631                 return;
1632
1633 #ifdef CONFIG_SME
1634         if (elems.bss_max_idle_period) {
1635                 unsigned int msec;
1636                 wpa_s->sme.bss_max_idle_period =
1637                         WPA_GET_LE16(elems.bss_max_idle_period);
1638                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1639                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1640                            (elems.bss_max_idle_period[2] & 0x01) ?
1641                            " (protected keep-live required)" : "");
1642                 if (wpa_s->sme.bss_max_idle_period == 0)
1643                         wpa_s->sme.bss_max_idle_period = 1;
1644                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1645                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1646                          /* msec times 1000 */
1647                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1648                         if (msec > 100)
1649                                 msec -= 100;
1650                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1651                                                wnm_bss_keep_alive, wpa_s,
1652                                                NULL);
1653                 }
1654         }
1655 #endif /* CONFIG_SME */
1656 }
1657
1658 #endif /* CONFIG_WNM */
1659
1660
1661 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1662 {
1663 #ifdef CONFIG_WNM
1664         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1665 #endif /* CONFIG_WNM */
1666 }
1667
1668
1669 #ifdef CONFIG_INTERWORKING
1670
1671 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1672                             size_t len)
1673 {
1674         int res;
1675
1676         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1677         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1678         if (res) {
1679                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1680         }
1681
1682         return res;
1683 }
1684
1685
1686 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1687                                             const u8 *ies, size_t ies_len)
1688 {
1689         struct ieee802_11_elems elems;
1690
1691         if (ies == NULL)
1692                 return;
1693
1694         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1695                 return;
1696
1697         if (elems.qos_map_set) {
1698                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1699                                  elems.qos_map_set_len);
1700         }
1701 }
1702
1703 #endif /* CONFIG_INTERWORKING */
1704
1705
1706 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1707                                           union wpa_event_data *data)
1708 {
1709         int l, len, found = 0, wpa_found, rsn_found;
1710         const u8 *p;
1711 #ifdef CONFIG_IEEE80211R
1712         u8 bssid[ETH_ALEN];
1713 #endif /* CONFIG_IEEE80211R */
1714
1715         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1716         if (data->assoc_info.req_ies)
1717                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1718                             data->assoc_info.req_ies_len);
1719         if (data->assoc_info.resp_ies) {
1720                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1721                             data->assoc_info.resp_ies_len);
1722 #ifdef CONFIG_TDLS
1723                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1724                                         data->assoc_info.resp_ies_len);
1725 #endif /* CONFIG_TDLS */
1726 #ifdef CONFIG_WNM
1727                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1728                                        data->assoc_info.resp_ies_len);
1729 #endif /* CONFIG_WNM */
1730 #ifdef CONFIG_INTERWORKING
1731                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1732                                                 data->assoc_info.resp_ies_len);
1733 #endif /* CONFIG_INTERWORKING */
1734         }
1735         if (data->assoc_info.beacon_ies)
1736                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1737                             data->assoc_info.beacon_ies,
1738                             data->assoc_info.beacon_ies_len);
1739         if (data->assoc_info.freq)
1740                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1741                         data->assoc_info.freq);
1742
1743         p = data->assoc_info.req_ies;
1744         l = data->assoc_info.req_ies_len;
1745
1746         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1747         while (p && l >= 2) {
1748                 len = p[1] + 2;
1749                 if (len > l) {
1750                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1751                                     p, l);
1752                         break;
1753                 }
1754                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1755                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1756                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1757                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1758                                 break;
1759                         found = 1;
1760                         wpa_find_assoc_pmkid(wpa_s);
1761                         break;
1762                 }
1763                 l -= len;
1764                 p += len;
1765         }
1766         if (!found && data->assoc_info.req_ies)
1767                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1768
1769 #ifdef CONFIG_IEEE80211R
1770 #ifdef CONFIG_SME
1771         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1772                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1773                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1774                                                  data->assoc_info.resp_ies,
1775                                                  data->assoc_info.resp_ies_len,
1776                                                  bssid) < 0) {
1777                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1778                                 "Reassociation Response failed");
1779                         wpa_supplicant_deauthenticate(
1780                                 wpa_s, WLAN_REASON_INVALID_IE);
1781                         return -1;
1782                 }
1783         }
1784
1785         p = data->assoc_info.resp_ies;
1786         l = data->assoc_info.resp_ies_len;
1787
1788 #ifdef CONFIG_WPS_STRICT
1789         if (p && wpa_s->current_ssid &&
1790             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1791                 struct wpabuf *wps;
1792                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1793                 if (wps == NULL) {
1794                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1795                                 "include WPS IE in (Re)Association Response");
1796                         return -1;
1797                 }
1798
1799                 if (wps_validate_assoc_resp(wps) < 0) {
1800                         wpabuf_free(wps);
1801                         wpa_supplicant_deauthenticate(
1802                                 wpa_s, WLAN_REASON_INVALID_IE);
1803                         return -1;
1804                 }
1805                 wpabuf_free(wps);
1806         }
1807 #endif /* CONFIG_WPS_STRICT */
1808
1809         /* Go through the IEs and make a copy of the MDIE, if present. */
1810         while (p && l >= 2) {
1811                 len = p[1] + 2;
1812                 if (len > l) {
1813                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1814                                     p, l);
1815                         break;
1816                 }
1817                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1818                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1819                         wpa_s->sme.ft_used = 1;
1820                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1821                                   MOBILITY_DOMAIN_ID_LEN);
1822                         break;
1823                 }
1824                 l -= len;
1825                 p += len;
1826         }
1827 #endif /* CONFIG_SME */
1828
1829         /* Process FT when SME is in the driver */
1830         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1831             wpa_ft_is_completed(wpa_s->wpa)) {
1832                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1833                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1834                                                  data->assoc_info.resp_ies,
1835                                                  data->assoc_info.resp_ies_len,
1836                                                  bssid) < 0) {
1837                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1838                                 "Reassociation Response failed");
1839                         wpa_supplicant_deauthenticate(
1840                                 wpa_s, WLAN_REASON_INVALID_IE);
1841                         return -1;
1842                 }
1843                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1844         }
1845
1846         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1847                              data->assoc_info.resp_ies_len);
1848 #endif /* CONFIG_IEEE80211R */
1849
1850         /* WPA/RSN IE from Beacon/ProbeResp */
1851         p = data->assoc_info.beacon_ies;
1852         l = data->assoc_info.beacon_ies_len;
1853
1854         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1855          */
1856         wpa_found = rsn_found = 0;
1857         while (p && l >= 2) {
1858                 len = p[1] + 2;
1859                 if (len > l) {
1860                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1861                                     p, l);
1862                         break;
1863                 }
1864                 if (!wpa_found &&
1865                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1866                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1867                         wpa_found = 1;
1868                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1869                 }
1870
1871                 if (!rsn_found &&
1872                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1873                         rsn_found = 1;
1874                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1875                 }
1876
1877                 l -= len;
1878                 p += len;
1879         }
1880
1881         if (!wpa_found && data->assoc_info.beacon_ies)
1882                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1883         if (!rsn_found && data->assoc_info.beacon_ies)
1884                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1885         if (wpa_found || rsn_found)
1886                 wpa_s->ap_ies_from_associnfo = 1;
1887
1888         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1889             wpa_s->assoc_freq != data->assoc_info.freq) {
1890                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1891                            "%u to %u MHz",
1892                            wpa_s->assoc_freq, data->assoc_info.freq);
1893                 wpa_supplicant_update_scan_results(wpa_s);
1894         }
1895
1896         wpa_s->assoc_freq = data->assoc_info.freq;
1897
1898         return 0;
1899 }
1900
1901
1902 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1903 {
1904         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1905
1906         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1907                 return -1;
1908
1909         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1910                 return 0;
1911
1912         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1913                                         WPA_IE_VENDOR_TYPE);
1914         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1915
1916         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1917                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1918             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1919                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1920                 return -1;
1921
1922         return 0;
1923 }
1924
1925
1926 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1927                                        union wpa_event_data *data)
1928 {
1929         u8 bssid[ETH_ALEN];
1930         int ft_completed;
1931
1932 #ifdef CONFIG_AP
1933         if (wpa_s->ap_iface) {
1934                 if (!data)
1935                         return;
1936                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1937                                     data->assoc_info.addr,
1938                                     data->assoc_info.req_ies,
1939                                     data->assoc_info.req_ies_len,
1940                                     data->assoc_info.reassoc);
1941                 return;
1942         }
1943 #endif /* CONFIG_AP */
1944
1945         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1946         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1947                 return;
1948
1949         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1950                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1951                 wpa_supplicant_deauthenticate(
1952                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1953                 return;
1954         }
1955
1956         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1957         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1958                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1959                         MACSTR, MAC2STR(bssid));
1960                 random_add_randomness(bssid, ETH_ALEN);
1961                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1962                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1963                 wpas_notify_bssid_changed(wpa_s);
1964
1965                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1966                         wpa_clear_keys(wpa_s, bssid);
1967                 }
1968                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1969                         wpa_supplicant_deauthenticate(
1970                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1971                         return;
1972                 }
1973
1974                 if (wpa_s->conf->ap_scan == 1 &&
1975                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1976                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1977                                 wpa_msg(wpa_s, MSG_WARNING,
1978                                         "WPA/RSN IEs not updated");
1979                 }
1980         }
1981
1982 #ifdef CONFIG_SME
1983         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1984         wpa_s->sme.prev_bssid_set = 1;
1985         wpa_s->sme.last_unprot_disconnect.sec = 0;
1986 #endif /* CONFIG_SME */
1987
1988         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1989         if (wpa_s->current_ssid) {
1990                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1991                  * initialized before association, but for other modes,
1992                  * initialize PC/SC here, if the current configuration needs
1993                  * smartcard or SIM/USIM. */
1994                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1995         }
1996         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1997         if (wpa_s->l2)
1998                 l2_packet_notify_auth_start(wpa_s->l2);
1999
2000         /*
2001          * Set portEnabled first to FALSE in order to get EAP state machine out
2002          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2003          * state machine may transit to AUTHENTICATING state based on obsolete
2004          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2005          * AUTHENTICATED without ever giving chance to EAP state machine to
2006          * reset the state.
2007          */
2008         if (!ft_completed) {
2009                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2010                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2011         }
2012         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2013                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2014         /* 802.1X::portControl = Auto */
2015         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2016         wpa_s->eapol_received = 0;
2017         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2018             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2019             (wpa_s->current_ssid &&
2020              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2021                 if (wpa_s->current_ssid &&
2022                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2023                     (wpa_s->drv_flags &
2024                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2025                         /*
2026                          * Set the key after having received joined-IBSS event
2027                          * from the driver.
2028                          */
2029                         wpa_supplicant_set_wpa_none_key(wpa_s,
2030                                                         wpa_s->current_ssid);
2031                 }
2032                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2033                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2034         } else if (!ft_completed) {
2035                 /* Timeout for receiving the first EAPOL packet */
2036                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2037         }
2038         wpa_supplicant_cancel_scan(wpa_s);
2039
2040         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2041             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2042                 /*
2043                  * We are done; the driver will take care of RSN 4-way
2044                  * handshake.
2045                  */
2046                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2047                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2048                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2049                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2050         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2051                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2052                 /*
2053                  * The driver will take care of RSN 4-way handshake, so we need
2054                  * to allow EAPOL supplicant to complete its work without
2055                  * waiting for WPA supplicant.
2056                  */
2057                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2058         } else if (ft_completed) {
2059                 /*
2060                  * FT protocol completed - make sure EAPOL state machine ends
2061                  * up in authenticated.
2062                  */
2063                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2064                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2065                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2066                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2067         }
2068
2069         wpa_s->last_eapol_matches_bssid = 0;
2070
2071         if (wpa_s->pending_eapol_rx) {
2072                 struct os_reltime now, age;
2073                 os_get_reltime(&now);
2074                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2075                 if (age.sec == 0 && age.usec < 100000 &&
2076                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2077                     0) {
2078                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2079                                 "frame that was received just before "
2080                                 "association notification");
2081                         wpa_supplicant_rx_eapol(
2082                                 wpa_s, wpa_s->pending_eapol_rx_src,
2083                                 wpabuf_head(wpa_s->pending_eapol_rx),
2084                                 wpabuf_len(wpa_s->pending_eapol_rx));
2085                 }
2086                 wpabuf_free(wpa_s->pending_eapol_rx);
2087                 wpa_s->pending_eapol_rx = NULL;
2088         }
2089
2090         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2091              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2092             wpa_s->current_ssid &&
2093             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2094                 /* Set static WEP keys again */
2095                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2096         }
2097
2098 #ifdef CONFIG_IBSS_RSN
2099         if (wpa_s->current_ssid &&
2100             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2101             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2102             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2103             wpa_s->ibss_rsn == NULL) {
2104                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2105                 if (!wpa_s->ibss_rsn) {
2106                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2107                         wpa_supplicant_deauthenticate(
2108                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2109                         return;
2110                 }
2111
2112                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2113         }
2114 #endif /* CONFIG_IBSS_RSN */
2115
2116         wpas_wps_notify_assoc(wpa_s, bssid);
2117
2118         if (data) {
2119                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2120                                     data->assoc_info.resp_ies_len,
2121                                     &data->assoc_info.wmm_params);
2122
2123                 if (wpa_s->reassoc_same_bss)
2124                         wmm_ac_restore_tspecs(wpa_s);
2125         }
2126 }
2127
2128
2129 static int disconnect_reason_recoverable(u16 reason_code)
2130 {
2131         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2132                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2133                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2134 }
2135
2136
2137 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2138                                           u16 reason_code,
2139                                           int locally_generated)
2140 {
2141         const u8 *bssid;
2142
2143         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2144                 /*
2145                  * At least Host AP driver and a Prism3 card seemed to be
2146                  * generating streams of disconnected events when configuring
2147                  * IBSS for WPA-None. Ignore them for now.
2148                  */
2149                 return;
2150         }
2151
2152         bssid = wpa_s->bssid;
2153         if (is_zero_ether_addr(bssid))
2154                 bssid = wpa_s->pending_bssid;
2155
2156         if (!is_zero_ether_addr(bssid) ||
2157             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2158                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2159                         " reason=%d%s",
2160                         MAC2STR(bssid), reason_code,
2161                         locally_generated ? " locally_generated=1" : "");
2162         }
2163 }
2164
2165
2166 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2167                                  int locally_generated)
2168 {
2169         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2170             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2171                 return 0; /* Not in 4-way handshake with PSK */
2172
2173         /*
2174          * It looks like connection was lost while trying to go through PSK
2175          * 4-way handshake. Filter out known disconnection cases that are caused
2176          * by something else than PSK mismatch to avoid confusing reports.
2177          */
2178
2179         if (locally_generated) {
2180                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2181                         return 0;
2182         }
2183
2184         return 1;
2185 }
2186
2187
2188 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2189                                                  u16 reason_code,
2190                                                  int locally_generated)
2191 {
2192         const u8 *bssid;
2193         int authenticating;
2194         u8 prev_pending_bssid[ETH_ALEN];
2195         struct wpa_bss *fast_reconnect = NULL;
2196         struct wpa_ssid *fast_reconnect_ssid = NULL;
2197         struct wpa_ssid *last_ssid;
2198
2199         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2200         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2201
2202         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2203                 /*
2204                  * At least Host AP driver and a Prism3 card seemed to be
2205                  * generating streams of disconnected events when configuring
2206                  * IBSS for WPA-None. Ignore them for now.
2207                  */
2208                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2209                         "IBSS/WPA-None mode");
2210                 return;
2211         }
2212
2213         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2214                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2215                         "pre-shared key may be incorrect");
2216                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2217                         return; /* P2P group removed */
2218                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2219         }
2220         if (!wpa_s->disconnected &&
2221             (!wpa_s->auto_reconnect_disabled ||
2222              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2223              wpas_wps_searching(wpa_s))) {
2224                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2225                         "reconnect (wps=%d/%d wpa_state=%d)",
2226                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2227                         wpas_wps_searching(wpa_s),
2228                         wpa_s->wpa_state);
2229                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2230                     wpa_s->current_ssid &&
2231                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2232                     !locally_generated &&
2233                     disconnect_reason_recoverable(reason_code)) {
2234                         /*
2235                          * It looks like the AP has dropped association with
2236                          * us, but could allow us to get back in. Try to
2237                          * reconnect to the same BSS without full scan to save
2238                          * time for some common cases.
2239                          */
2240                         fast_reconnect = wpa_s->current_bss;
2241                         fast_reconnect_ssid = wpa_s->current_ssid;
2242                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2243                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2244                 else
2245                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2246                                 "immediate scan");
2247         } else {
2248                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2249                         "try to re-connect");
2250                 wpa_s->reassociate = 0;
2251                 wpa_s->disconnected = 1;
2252                 wpa_supplicant_cancel_sched_scan(wpa_s);
2253         }
2254         bssid = wpa_s->bssid;
2255         if (is_zero_ether_addr(bssid))
2256                 bssid = wpa_s->pending_bssid;
2257         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2258                 wpas_connection_failed(wpa_s, bssid);
2259         wpa_sm_notify_disassoc(wpa_s->wpa);
2260         if (locally_generated)
2261                 wpa_s->disconnect_reason = -reason_code;
2262         else
2263                 wpa_s->disconnect_reason = reason_code;
2264         wpas_notify_disconnect_reason(wpa_s);
2265         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2266                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2267                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2268         }
2269         last_ssid = wpa_s->current_ssid;
2270         wpa_supplicant_mark_disassoc(wpa_s);
2271
2272         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2273                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2274                 wpa_s->current_ssid = last_ssid;
2275         }
2276
2277         if (fast_reconnect &&
2278             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2279             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2280             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2281                              fast_reconnect->ssid_len) &&
2282             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2283 #ifndef CONFIG_NO_SCAN_PROCESSING
2284                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2285                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2286                                            fast_reconnect_ssid) < 0) {
2287                         /* Recover through full scan */
2288                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2289                 }
2290 #endif /* CONFIG_NO_SCAN_PROCESSING */
2291         } else if (fast_reconnect) {
2292                 /*
2293                  * Could not reconnect to the same BSS due to network being
2294                  * disabled. Use a new scan to match the alternative behavior
2295                  * above, i.e., to continue automatic reconnection attempt in a
2296                  * way that enforces disabled network rules.
2297                  */
2298                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2299         }
2300 }
2301
2302
2303 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2304 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2305 {
2306         struct wpa_supplicant *wpa_s = eloop_ctx;
2307
2308         if (!wpa_s->pending_mic_error_report)
2309                 return;
2310
2311         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2312         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2313         wpa_s->pending_mic_error_report = 0;
2314 }
2315 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2316
2317
2318 static void
2319 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2320                                          union wpa_event_data *data)
2321 {
2322         int pairwise;
2323         struct os_reltime t;
2324
2325         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2326         pairwise = (data && data->michael_mic_failure.unicast);
2327         os_get_reltime(&t);
2328         if ((wpa_s->last_michael_mic_error.sec &&
2329              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2330             wpa_s->pending_mic_error_report) {
2331                 if (wpa_s->pending_mic_error_report) {
2332                         /*
2333                          * Send the pending MIC error report immediately since
2334                          * we are going to start countermeasures and AP better
2335                          * do the same.
2336                          */
2337                         wpa_sm_key_request(wpa_s->wpa, 1,
2338                                            wpa_s->pending_mic_error_pairwise);
2339                 }
2340
2341                 /* Send the new MIC error report immediately since we are going
2342                  * to start countermeasures and AP better do the same.
2343                  */
2344                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2345
2346                 /* initialize countermeasures */
2347                 wpa_s->countermeasures = 1;
2348
2349                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2350
2351                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2352
2353                 /*
2354                  * Need to wait for completion of request frame. We do not get
2355                  * any callback for the message completion, so just wait a
2356                  * short while and hope for the best. */
2357                 os_sleep(0, 10000);
2358
2359                 wpa_drv_set_countermeasures(wpa_s, 1);
2360                 wpa_supplicant_deauthenticate(wpa_s,
2361                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2362                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2363                                      wpa_s, NULL);
2364                 eloop_register_timeout(60, 0,
2365                                        wpa_supplicant_stop_countermeasures,
2366                                        wpa_s, NULL);
2367                 /* TODO: mark the AP rejected for 60 second. STA is
2368                  * allowed to associate with another AP.. */
2369         } else {
2370 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2371                 if (wpa_s->mic_errors_seen) {
2372                         /*
2373                          * Reduce the effectiveness of Michael MIC error
2374                          * reports as a means for attacking against TKIP if
2375                          * more than one MIC failure is noticed with the same
2376                          * PTK. We delay the transmission of the reports by a
2377                          * random time between 0 and 60 seconds in order to
2378                          * force the attacker wait 60 seconds before getting
2379                          * the information on whether a frame resulted in a MIC
2380                          * failure.
2381                          */
2382                         u8 rval[4];
2383                         int sec;
2384
2385                         if (os_get_random(rval, sizeof(rval)) < 0)
2386                                 sec = os_random() % 60;
2387                         else
2388                                 sec = WPA_GET_BE32(rval) % 60;
2389                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2390                                 "report %d seconds", sec);
2391                         wpa_s->pending_mic_error_report = 1;
2392                         wpa_s->pending_mic_error_pairwise = pairwise;
2393                         eloop_cancel_timeout(
2394                                 wpa_supplicant_delayed_mic_error_report,
2395                                 wpa_s, NULL);
2396                         eloop_register_timeout(
2397                                 sec, os_random() % 1000000,
2398                                 wpa_supplicant_delayed_mic_error_report,
2399                                 wpa_s, NULL);
2400                 } else {
2401                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2402                 }
2403 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2404                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2405 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2406         }
2407         wpa_s->last_michael_mic_error = t;
2408         wpa_s->mic_errors_seen++;
2409 }
2410
2411
2412 #ifdef CONFIG_TERMINATE_ONLASTIF
2413 static int any_interfaces(struct wpa_supplicant *head)
2414 {
2415         struct wpa_supplicant *wpa_s;
2416
2417         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2418                 if (!wpa_s->interface_removed)
2419                         return 1;
2420         return 0;
2421 }
2422 #endif /* CONFIG_TERMINATE_ONLASTIF */
2423
2424
2425 static void
2426 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2427                                       union wpa_event_data *data)
2428 {
2429         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2430                 return;
2431
2432         switch (data->interface_status.ievent) {
2433         case EVENT_INTERFACE_ADDED:
2434                 if (!wpa_s->interface_removed)
2435                         break;
2436                 wpa_s->interface_removed = 0;
2437                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2438                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2439                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2440                                 "driver after interface was added");
2441                 }
2442                 break;
2443         case EVENT_INTERFACE_REMOVED:
2444                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2445                 wpa_s->interface_removed = 1;
2446                 wpa_supplicant_mark_disassoc(wpa_s);
2447                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2448                 l2_packet_deinit(wpa_s->l2);
2449                 wpa_s->l2 = NULL;
2450 #ifdef CONFIG_TERMINATE_ONLASTIF
2451                 /* check if last interface */
2452                 if (!any_interfaces(wpa_s->global->ifaces))
2453                         eloop_terminate();
2454 #endif /* CONFIG_TERMINATE_ONLASTIF */
2455                 break;
2456         }
2457 }
2458
2459
2460 #ifdef CONFIG_PEERKEY
2461 static void
2462 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2463                               union wpa_event_data *data)
2464 {
2465         if (data == NULL)
2466                 return;
2467         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2468 }
2469 #endif /* CONFIG_PEERKEY */
2470
2471
2472 #ifdef CONFIG_TDLS
2473 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2474                                       union wpa_event_data *data)
2475 {
2476         if (data == NULL)
2477                 return;
2478         switch (data->tdls.oper) {
2479         case TDLS_REQUEST_SETUP:
2480                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2481                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2482                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2483                 else
2484                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2485                 break;
2486         case TDLS_REQUEST_TEARDOWN:
2487                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2488                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2489                                                data->tdls.reason_code);
2490                 else
2491                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2492                                           data->tdls.peer);
2493                 break;
2494         }
2495 }
2496 #endif /* CONFIG_TDLS */
2497
2498
2499 #ifdef CONFIG_WNM
2500 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2501                                      union wpa_event_data *data)
2502 {
2503         if (data == NULL)
2504                 return;
2505         switch (data->wnm.oper) {
2506         case WNM_OPER_SLEEP:
2507                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2508                            "(action=%d, intval=%d)",
2509                            data->wnm.sleep_action, data->wnm.sleep_intval);
2510                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2511                                              data->wnm.sleep_intval, NULL);
2512                 break;
2513         }
2514 }
2515 #endif /* CONFIG_WNM */
2516
2517
2518 #ifdef CONFIG_IEEE80211R
2519 static void
2520 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2521                                  union wpa_event_data *data)
2522 {
2523         if (data == NULL)
2524                 return;
2525
2526         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2527                                     data->ft_ies.ies_len,
2528                                     data->ft_ies.ft_action,
2529                                     data->ft_ies.target_ap,
2530                                     data->ft_ies.ric_ies,
2531                                     data->ft_ies.ric_ies_len) < 0) {
2532                 /* TODO: prevent MLME/driver from trying to associate? */
2533         }
2534 }
2535 #endif /* CONFIG_IEEE80211R */
2536
2537
2538 #ifdef CONFIG_IBSS_RSN
2539 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2540                                                 union wpa_event_data *data)
2541 {
2542         struct wpa_ssid *ssid;
2543         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2544                 return;
2545         if (data == NULL)
2546                 return;
2547         ssid = wpa_s->current_ssid;
2548         if (ssid == NULL)
2549                 return;
2550         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2551                 return;
2552
2553         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2554 }
2555
2556
2557 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2558                                            union wpa_event_data *data)
2559 {
2560         struct wpa_ssid *ssid = wpa_s->current_ssid;
2561
2562         if (ssid == NULL)
2563                 return;
2564
2565         /* check if the ssid is correctly configured as IBSS/RSN */
2566         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2567                 return;
2568
2569         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2570                              data->rx_mgmt.frame_len);
2571 }
2572 #endif /* CONFIG_IBSS_RSN */
2573
2574
2575 #ifdef CONFIG_IEEE80211R
2576 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2577                          size_t len)
2578 {
2579         const u8 *sta_addr, *target_ap_addr;
2580         u16 status;
2581
2582         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2583         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2584                 return; /* only SME case supported for now */
2585         if (len < 1 + 2 * ETH_ALEN + 2)
2586                 return;
2587         if (data[0] != 2)
2588                 return; /* Only FT Action Response is supported for now */
2589         sta_addr = data + 1;
2590         target_ap_addr = data + 1 + ETH_ALEN;
2591         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2592         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2593                 MACSTR " TargetAP " MACSTR " status %u",
2594                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2595
2596         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2597                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2598                         " in FT Action Response", MAC2STR(sta_addr));
2599                 return;
2600         }
2601
2602         if (status) {
2603                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2604                         "failure (status code %d)", status);
2605                 /* TODO: report error to FT code(?) */
2606                 return;
2607         }
2608
2609         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2610                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2611                                     target_ap_addr, NULL, 0) < 0)
2612                 return;
2613
2614 #ifdef CONFIG_SME
2615         {
2616                 struct wpa_bss *bss;
2617                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2618                 if (bss)
2619                         wpa_s->sme.freq = bss->freq;
2620                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2621                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2622                               WLAN_AUTH_FT);
2623         }
2624 #endif /* CONFIG_SME */
2625 }
2626 #endif /* CONFIG_IEEE80211R */
2627
2628
2629 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2630                                                struct unprot_deauth *e)
2631 {
2632 #ifdef CONFIG_IEEE80211W
2633         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2634                    "dropped: " MACSTR " -> " MACSTR
2635                    " (reason code %u)",
2636                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2637         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2638 #endif /* CONFIG_IEEE80211W */
2639 }
2640
2641
2642 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2643                                                  struct unprot_disassoc *e)
2644 {
2645 #ifdef CONFIG_IEEE80211W
2646         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2647                    "dropped: " MACSTR " -> " MACSTR
2648                    " (reason code %u)",
2649                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2650         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2651 #endif /* CONFIG_IEEE80211W */
2652 }
2653
2654
2655 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2656                                   u16 reason_code, int locally_generated,
2657                                   const u8 *ie, size_t ie_len, int deauth)
2658 {
2659 #ifdef CONFIG_AP
2660         if (wpa_s->ap_iface && addr) {
2661                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2662                 return;
2663         }
2664
2665         if (wpa_s->ap_iface) {
2666                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2667                 return;
2668         }
2669 #endif /* CONFIG_AP */
2670
2671         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2672
2673         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2674               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2675                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2676                eapol_sm_failed(wpa_s->eapol))) &&
2677              !wpa_s->eap_expected_failure))
2678                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2679
2680 #ifdef CONFIG_P2P
2681         if (deauth && reason_code > 0) {
2682                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2683                                           locally_generated) > 0) {
2684                         /*
2685                          * The interface was removed, so cannot continue
2686                          * processing any additional operations after this.
2687                          */
2688                         return;
2689                 }
2690         }
2691 #endif /* CONFIG_P2P */
2692
2693         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2694                                              locally_generated);
2695 }
2696
2697
2698 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2699                                 struct disassoc_info *info)
2700 {
2701         u16 reason_code = 0;
2702         int locally_generated = 0;
2703         const u8 *addr = NULL;
2704         const u8 *ie = NULL;
2705         size_t ie_len = 0;
2706
2707         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2708
2709         if (info) {
2710                 addr = info->addr;
2711                 ie = info->ie;
2712                 ie_len = info->ie_len;
2713                 reason_code = info->reason_code;
2714                 locally_generated = info->locally_generated;
2715                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2716                         locally_generated ? " (locally generated)" : "");
2717                 if (addr)
2718                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2719                                 MAC2STR(addr));
2720                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2721                             ie, ie_len);
2722         }
2723
2724 #ifdef CONFIG_AP
2725         if (wpa_s->ap_iface && info && info->addr) {
2726                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2727                 return;
2728         }
2729
2730         if (wpa_s->ap_iface) {
2731                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2732                 return;
2733         }
2734 #endif /* CONFIG_AP */
2735
2736 #ifdef CONFIG_P2P
2737         if (info) {
2738                 wpas_p2p_disassoc_notif(
2739                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2740                         locally_generated);
2741         }
2742 #endif /* CONFIG_P2P */
2743
2744         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2745                 sme_event_disassoc(wpa_s, info);
2746
2747         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2748                               ie, ie_len, 0);
2749 }
2750
2751
2752 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2753                               struct deauth_info *info)
2754 {
2755         u16 reason_code = 0;
2756         int locally_generated = 0;
2757         const u8 *addr = NULL;
2758         const u8 *ie = NULL;
2759         size_t ie_len = 0;
2760
2761         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2762
2763         if (info) {
2764                 addr = info->addr;
2765                 ie = info->ie;
2766                 ie_len = info->ie_len;
2767                 reason_code = info->reason_code;
2768                 locally_generated = info->locally_generated;
2769                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2770                         reason_code,
2771                         locally_generated ? " (locally generated)" : "");
2772                 if (addr) {
2773                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2774                                 MAC2STR(addr));
2775                 }
2776                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2777                             ie, ie_len);
2778         }
2779
2780         wpa_reset_ft_completed(wpa_s->wpa);
2781
2782         wpas_event_disconnect(wpa_s, addr, reason_code,
2783                               locally_generated, ie, ie_len, 1);
2784 }
2785
2786
2787 static const char * reg_init_str(enum reg_change_initiator init)
2788 {
2789         switch (init) {
2790         case REGDOM_SET_BY_CORE:
2791                 return "CORE";
2792         case REGDOM_SET_BY_USER:
2793                 return "USER";
2794         case REGDOM_SET_BY_DRIVER:
2795                 return "DRIVER";
2796         case REGDOM_SET_BY_COUNTRY_IE:
2797                 return "COUNTRY_IE";
2798         case REGDOM_BEACON_HINT:
2799                 return "BEACON_HINT";
2800         }
2801         return "?";
2802 }
2803
2804
2805 static const char * reg_type_str(enum reg_type type)
2806 {
2807         switch (type) {
2808         case REGDOM_TYPE_UNKNOWN:
2809                 return "UNKNOWN";
2810         case REGDOM_TYPE_COUNTRY:
2811                 return "COUNTRY";
2812         case REGDOM_TYPE_WORLD:
2813                 return "WORLD";
2814         case REGDOM_TYPE_CUSTOM_WORLD:
2815                 return "CUSTOM_WORLD";
2816         case REGDOM_TYPE_INTERSECTION:
2817                 return "INTERSECTION";
2818         }
2819         return "?";
2820 }
2821
2822
2823 static void wpa_supplicant_update_channel_list(
2824         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2825 {
2826         struct wpa_supplicant *ifs;
2827
2828         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2829                 reg_init_str(info->initiator), reg_type_str(info->type),
2830                 info->alpha2[0] ? " alpha2=" : "",
2831                 info->alpha2[0] ? info->alpha2 : "");
2832
2833         if (wpa_s->drv_priv == NULL)
2834                 return; /* Ignore event during drv initialization */
2835
2836         free_hw_features(wpa_s);
2837         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2838                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2839
2840         wpas_p2p_update_channel_list(wpa_s);
2841
2842         /*
2843          * Check other interfaces to see if they share the same radio. If
2844          * so, they get updated with this same hw mode info.
2845          */
2846         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2847                          radio_list) {
2848                 if (ifs != wpa_s) {
2849                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2850                                    ifs->ifname);
2851                         free_hw_features(ifs);
2852                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2853                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2854                 }
2855         }
2856 }
2857
2858
2859 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2860                                       const u8 *frame, size_t len, int freq,
2861                                       int rssi)
2862 {
2863         const struct ieee80211_mgmt *mgmt;
2864         const u8 *payload;
2865         size_t plen;
2866         u8 category;
2867
2868         if (len < IEEE80211_HDRLEN + 2)
2869                 return;
2870
2871         mgmt = (const struct ieee80211_mgmt *) frame;
2872         payload = frame + IEEE80211_HDRLEN;
2873         category = *payload++;
2874         plen = len - IEEE80211_HDRLEN - 1;
2875
2876         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2877                 " Category=%u DataLen=%d freq=%d MHz",
2878                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2879
2880         if (category == WLAN_ACTION_WMM) {
2881                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
2882                 return;
2883         }
2884
2885 #ifdef CONFIG_IEEE80211R
2886         if (category == WLAN_ACTION_FT) {
2887                 ft_rx_action(wpa_s, payload, plen);
2888                 return;
2889         }
2890 #endif /* CONFIG_IEEE80211R */
2891
2892 #ifdef CONFIG_IEEE80211W
2893 #ifdef CONFIG_SME
2894         if (category == WLAN_ACTION_SA_QUERY) {
2895                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2896                 return;
2897         }
2898 #endif /* CONFIG_SME */
2899 #endif /* CONFIG_IEEE80211W */
2900
2901 #ifdef CONFIG_WNM
2902         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2903                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2904                 return;
2905         }
2906 #endif /* CONFIG_WNM */
2907
2908 #ifdef CONFIG_GAS
2909         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2910              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2911             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2912                          mgmt->u.action.category,
2913                          payload, plen, freq) == 0)
2914                 return;
2915 #endif /* CONFIG_GAS */
2916
2917 #ifdef CONFIG_TDLS
2918         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2919             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2920                 wpa_dbg(wpa_s, MSG_DEBUG,
2921                         "TDLS: Received Discovery Response from " MACSTR,
2922                         MAC2STR(mgmt->sa));
2923                 return;
2924         }
2925 #endif /* CONFIG_TDLS */
2926
2927 #ifdef CONFIG_INTERWORKING
2928         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2929             payload[0] == QOS_QOS_MAP_CONFIG) {
2930                 const u8 *pos = payload + 1;
2931                 size_t qlen = plen - 1;
2932                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2933                         MACSTR, MAC2STR(mgmt->sa));
2934                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2935                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2936                     pos[1] <= qlen - 2 && pos[1] >= 16)
2937                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2938                 return;
2939         }
2940 #endif /* CONFIG_INTERWORKING */
2941
2942         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2943             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
2944                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
2945                 return;
2946         }
2947
2948         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2949             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
2950                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
2951                                                          payload + 1, plen - 1,
2952                                                          rssi);
2953                 return;
2954         }
2955
2956         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2957                            category, payload, plen, freq);
2958         if (wpa_s->ifmsh)
2959                 mesh_mpm_action_rx(wpa_s, mgmt, len);
2960 }
2961
2962
2963 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2964                                              union wpa_event_data *event)
2965 {
2966 #ifdef CONFIG_P2P
2967         struct wpa_supplicant *ifs;
2968 #endif /* CONFIG_P2P */
2969         struct wpa_freq_range_list *list;
2970         char *str = NULL;
2971
2972         list = &event->freq_range;
2973
2974         if (list->num)
2975                 str = freq_range_list_str(list);
2976         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2977                 str ? str : "");
2978
2979 #ifdef CONFIG_P2P
2980         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2981                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2982                         __func__);
2983         } else {
2984                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2985                 wpas_p2p_update_channel_list(wpa_s);
2986         }
2987
2988         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2989                 int freq;
2990                 if (!ifs->current_ssid ||
2991                     !ifs->current_ssid->p2p_group ||
2992                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2993                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2994                         continue;
2995
2996                 freq = ifs->current_ssid->frequency;
2997                 if (!freq_range_list_includes(list, freq)) {
2998                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2999                                 freq);
3000                         continue;
3001                 }
3002
3003                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
3004                         freq);
3005                 /* TODO: Consider using CSA or removing the group within
3006                  * wpa_supplicant */
3007                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
3008         }
3009 #endif /* CONFIG_P2P */
3010
3011         os_free(str);
3012 }
3013
3014
3015 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3016                                             union wpa_event_data *data)
3017 {
3018         wpa_dbg(wpa_s, MSG_DEBUG,
3019                 "Connection authorized by device, previous state %d",
3020                 wpa_s->wpa_state);
3021         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3022                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3023                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3024                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3025                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3026         }
3027         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3028         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3029                                data->assoc_info.ptk_kck_len,
3030                                data->assoc_info.ptk_kek,
3031                                data->assoc_info.ptk_kek_len);
3032 }
3033
3034
3035 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3036                           union wpa_event_data *data)
3037 {
3038         struct wpa_supplicant *wpa_s = ctx;
3039
3040         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3041             event != EVENT_INTERFACE_ENABLED &&
3042             event != EVENT_INTERFACE_STATUS &&
3043             event != EVENT_SCHED_SCAN_STOPPED) {
3044                 wpa_dbg(wpa_s, MSG_DEBUG,
3045                         "Ignore event %s (%d) while interface is disabled",
3046                         event_to_string(event), event);
3047                 return;
3048         }
3049
3050 #ifndef CONFIG_NO_STDOUT_DEBUG
3051 {
3052         int level = MSG_DEBUG;
3053
3054         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3055                 const struct ieee80211_hdr *hdr;
3056                 u16 fc;
3057                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3058                 fc = le_to_host16(hdr->frame_control);
3059                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3060                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3061                         level = MSG_EXCESSIVE;
3062         }
3063
3064         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3065                 event_to_string(event), event);
3066 }
3067 #endif /* CONFIG_NO_STDOUT_DEBUG */
3068
3069         switch (event) {
3070         case EVENT_AUTH:
3071                 sme_event_auth(wpa_s, data);
3072                 break;
3073         case EVENT_ASSOC:
3074                 wpa_supplicant_event_assoc(wpa_s, data);
3075                 if (data && data->assoc_info.authorized)
3076                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3077                 break;
3078         case EVENT_DISASSOC:
3079                 wpas_event_disassoc(wpa_s,
3080                                     data ? &data->disassoc_info : NULL);
3081                 break;
3082         case EVENT_DEAUTH:
3083                 wpas_event_deauth(wpa_s,
3084                                   data ? &data->deauth_info : NULL);
3085                 break;
3086         case EVENT_MICHAEL_MIC_FAILURE:
3087                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3088                 break;
3089 #ifndef CONFIG_NO_SCAN_PROCESSING
3090         case EVENT_SCAN_STARTED:
3091                 os_get_reltime(&wpa_s->scan_start_time);
3092                 if (wpa_s->own_scan_requested) {
3093                         struct os_reltime diff;
3094
3095                         os_reltime_sub(&wpa_s->scan_start_time,
3096                                        &wpa_s->scan_trigger_time, &diff);
3097                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3098                                 diff.sec, diff.usec);
3099                         wpa_s->own_scan_requested = 0;
3100                         wpa_s->own_scan_running = 1;
3101                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3102                             wpa_s->manual_scan_use_id) {
3103                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3104                                              WPA_EVENT_SCAN_STARTED "id=%u",
3105                                              wpa_s->manual_scan_id);
3106                         } else {
3107                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3108                                              WPA_EVENT_SCAN_STARTED);
3109                         }
3110                 } else {
3111                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3112                         wpa_s->radio->external_scan_running = 1;
3113                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3114                 }
3115                 break;
3116         case EVENT_SCAN_RESULTS:
3117                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3118                         struct os_reltime now, diff;
3119                         os_get_reltime(&now);
3120                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3121                         wpa_s->scan_start_time.sec = 0;
3122                         wpa_s->scan_start_time.usec = 0;
3123                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3124                                 diff.sec, diff.usec);
3125                 }
3126                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3127                         break; /* interface may have been removed */
3128                 wpa_s->own_scan_running = 0;
3129                 wpa_s->radio->external_scan_running = 0;
3130                 radio_work_check_next(wpa_s);
3131                 break;
3132 #endif /* CONFIG_NO_SCAN_PROCESSING */
3133         case EVENT_ASSOCINFO:
3134                 wpa_supplicant_event_associnfo(wpa_s, data);
3135                 break;
3136         case EVENT_INTERFACE_STATUS:
3137                 wpa_supplicant_event_interface_status(wpa_s, data);
3138                 break;
3139         case EVENT_PMKID_CANDIDATE:
3140                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3141                 break;
3142 #ifdef CONFIG_PEERKEY
3143         case EVENT_STKSTART:
3144                 wpa_supplicant_event_stkstart(wpa_s, data);
3145                 break;
3146 #endif /* CONFIG_PEERKEY */
3147 #ifdef CONFIG_TDLS
3148         case EVENT_TDLS:
3149                 wpa_supplicant_event_tdls(wpa_s, data);
3150                 break;
3151 #endif /* CONFIG_TDLS */
3152 #ifdef CONFIG_WNM
3153         case EVENT_WNM:
3154                 wpa_supplicant_event_wnm(wpa_s, data);
3155                 break;
3156 #endif /* CONFIG_WNM */
3157 #ifdef CONFIG_IEEE80211R
3158         case EVENT_FT_RESPONSE:
3159                 wpa_supplicant_event_ft_response(wpa_s, data);
3160                 break;
3161 #endif /* CONFIG_IEEE80211R */
3162 #ifdef CONFIG_IBSS_RSN
3163         case EVENT_IBSS_RSN_START:
3164                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3165                 break;
3166 #endif /* CONFIG_IBSS_RSN */
3167         case EVENT_ASSOC_REJECT:
3168                 if (data->assoc_reject.bssid)
3169                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3170                                 "bssid=" MACSTR " status_code=%u",
3171                                 MAC2STR(data->assoc_reject.bssid),
3172                                 data->assoc_reject.status_code);
3173                 else
3174                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3175                                 "status_code=%u",
3176                                 data->assoc_reject.status_code);
3177                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3178                         sme_event_assoc_reject(wpa_s, data);
3179                 else {
3180                         const u8 *bssid = data->assoc_reject.bssid;
3181                         if (bssid == NULL || is_zero_ether_addr(bssid))
3182                                 bssid = wpa_s->pending_bssid;
3183                         wpas_connection_failed(wpa_s, bssid);
3184                         wpa_supplicant_mark_disassoc(wpa_s);
3185                 }
3186                 break;
3187         case EVENT_AUTH_TIMED_OUT:
3188                 /* It is possible to get this event from earlier connection */
3189                 if (wpa_s->current_ssid &&
3190                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3191                         wpa_dbg(wpa_s, MSG_DEBUG,
3192                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3193                         break;
3194                 }
3195                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3196                         sme_event_auth_timed_out(wpa_s, data);
3197                 break;
3198         case EVENT_ASSOC_TIMED_OUT:
3199                 /* It is possible to get this event from earlier connection */
3200                 if (wpa_s->current_ssid &&
3201                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3202                         wpa_dbg(wpa_s, MSG_DEBUG,
3203                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3204                         break;
3205                 }
3206                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3207                         sme_event_assoc_timed_out(wpa_s, data);
3208                 break;
3209         case EVENT_TX_STATUS:
3210                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3211                         " type=%d stype=%d",
3212                         MAC2STR(data->tx_status.dst),
3213                         data->tx_status.type, data->tx_status.stype);
3214 #ifdef CONFIG_AP
3215                 if (wpa_s->ap_iface == NULL) {
3216 #ifdef CONFIG_OFFCHANNEL
3217                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3218                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3219                                 offchannel_send_action_tx_status(
3220                                         wpa_s, data->tx_status.dst,
3221                                         data->tx_status.data,
3222                                         data->tx_status.data_len,
3223                                         data->tx_status.ack ?
3224                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3225                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3226 #endif /* CONFIG_OFFCHANNEL */
3227                         break;
3228                 }
3229 #endif /* CONFIG_AP */
3230 #ifdef CONFIG_OFFCHANNEL
3231                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3232                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3233                 /*
3234                  * Catch TX status events for Action frames we sent via group
3235                  * interface in GO mode.
3236                  */
3237                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3238                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3239                     os_memcmp(wpa_s->parent->pending_action_dst,
3240                               data->tx_status.dst, ETH_ALEN) == 0) {
3241                         offchannel_send_action_tx_status(
3242                                 wpa_s->parent, data->tx_status.dst,
3243                                 data->tx_status.data,
3244                                 data->tx_status.data_len,
3245                                 data->tx_status.ack ?
3246                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3247                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3248                         break;
3249                 }
3250 #endif /* CONFIG_OFFCHANNEL */
3251 #ifdef CONFIG_AP
3252                 switch (data->tx_status.type) {
3253                 case WLAN_FC_TYPE_MGMT:
3254                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3255                                       data->tx_status.data_len,
3256                                       data->tx_status.stype,
3257                                       data->tx_status.ack);
3258                         break;
3259                 case WLAN_FC_TYPE_DATA:
3260                         ap_tx_status(wpa_s, data->tx_status.dst,
3261                                      data->tx_status.data,
3262                                      data->tx_status.data_len,
3263                                      data->tx_status.ack);
3264                         break;
3265                 }
3266 #endif /* CONFIG_AP */
3267                 break;
3268 #ifdef CONFIG_AP
3269         case EVENT_EAPOL_TX_STATUS:
3270                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3271                                    data->eapol_tx_status.data,
3272                                    data->eapol_tx_status.data_len,
3273                                    data->eapol_tx_status.ack);
3274                 break;
3275         case EVENT_DRIVER_CLIENT_POLL_OK:
3276                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3277                 break;
3278         case EVENT_RX_FROM_UNKNOWN:
3279                 if (wpa_s->ap_iface == NULL)
3280                         break;
3281                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3282                                        data->rx_from_unknown.wds);
3283                 break;
3284         case EVENT_CH_SWITCH:
3285                 if (!data)
3286                         break;
3287                 if (!wpa_s->ap_iface) {
3288                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3289                                 "event in non-AP mode");
3290                         break;
3291                 }
3292
3293                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3294                                   data->ch_switch.ht_enabled,
3295                                   data->ch_switch.ch_offset,
3296                                   data->ch_switch.ch_width,
3297                                   data->ch_switch.cf1,
3298                                   data->ch_switch.cf2);
3299                 break;
3300 #endif /* CONFIG_AP */
3301         case EVENT_RX_MGMT: {
3302                 u16 fc, stype;
3303                 const struct ieee80211_mgmt *mgmt;
3304
3305 #ifdef CONFIG_TESTING_OPTIONS
3306                 if (wpa_s->ext_mgmt_frame_handling) {
3307                         struct rx_mgmt *rx = &data->rx_mgmt;
3308                         size_t hex_len = 2 * rx->frame_len + 1;
3309                         char *hex = os_malloc(hex_len);
3310                         if (hex) {
3311                                 wpa_snprintf_hex(hex, hex_len,
3312                                                  rx->frame, rx->frame_len);
3313                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3314                                         rx->freq, rx->datarate, rx->ssi_signal,
3315                                         hex);
3316                                 os_free(hex);
3317                         }
3318                         break;
3319                 }
3320 #endif /* CONFIG_TESTING_OPTIONS */
3321
3322                 mgmt = (const struct ieee80211_mgmt *)
3323                         data->rx_mgmt.frame;
3324                 fc = le_to_host16(mgmt->frame_control);
3325                 stype = WLAN_FC_GET_STYPE(fc);
3326
3327 #ifdef CONFIG_AP
3328                 if (wpa_s->ap_iface == NULL) {
3329 #endif /* CONFIG_AP */
3330 #ifdef CONFIG_P2P
3331                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3332                             data->rx_mgmt.frame_len > 24) {
3333                                 const u8 *src = mgmt->sa;
3334                                 const u8 *ie = mgmt->u.probe_req.variable;
3335                                 size_t ie_len = data->rx_mgmt.frame_len -
3336                                         (mgmt->u.probe_req.variable -
3337                                          data->rx_mgmt.frame);
3338                                 wpas_p2p_probe_req_rx(
3339                                         wpa_s, src, mgmt->da,
3340                                         mgmt->bssid, ie, ie_len,
3341                                         data->rx_mgmt.ssi_signal);
3342                                 break;
3343                         }
3344 #endif /* CONFIG_P2P */
3345 #ifdef CONFIG_IBSS_RSN
3346                         if (wpa_s->current_ssid &&
3347                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3348                             stype == WLAN_FC_STYPE_AUTH &&
3349                             data->rx_mgmt.frame_len >= 30) {
3350                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3351                                 break;
3352                         }
3353 #endif /* CONFIG_IBSS_RSN */
3354
3355                         if (stype == WLAN_FC_STYPE_ACTION) {
3356                                 wpas_event_rx_mgmt_action(
3357                                         wpa_s, data->rx_mgmt.frame,
3358                                         data->rx_mgmt.frame_len,
3359                                         data->rx_mgmt.freq,
3360                                         data->rx_mgmt.ssi_signal);
3361                                 break;
3362                         }
3363
3364                         if (wpa_s->ifmsh) {
3365                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3366                                 break;
3367                         }
3368
3369                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3370                                 "management frame in non-AP mode");
3371                         break;
3372 #ifdef CONFIG_AP
3373                 }
3374
3375                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3376                     data->rx_mgmt.frame_len > 24) {
3377                         const u8 *ie = mgmt->u.probe_req.variable;
3378                         size_t ie_len = data->rx_mgmt.frame_len -
3379                                 (mgmt->u.probe_req.variable -
3380                                  data->rx_mgmt.frame);
3381
3382                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3383                                          mgmt->bssid, ie, ie_len,
3384                                          data->rx_mgmt.ssi_signal);
3385                 }
3386
3387                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3388 #endif /* CONFIG_AP */
3389                 break;
3390                 }
3391         case EVENT_RX_PROBE_REQ:
3392                 if (data->rx_probe_req.sa == NULL ||
3393                     data->rx_probe_req.ie == NULL)
3394                         break;
3395 #ifdef CONFIG_AP
3396                 if (wpa_s->ap_iface) {
3397                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3398                                              data->rx_probe_req.sa,
3399                                              data->rx_probe_req.da,
3400                                              data->rx_probe_req.bssid,
3401                                              data->rx_probe_req.ie,
3402                                              data->rx_probe_req.ie_len,
3403                                              data->rx_probe_req.ssi_signal);
3404                         break;
3405                 }
3406 #endif /* CONFIG_AP */
3407                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3408                                       data->rx_probe_req.da,
3409                                       data->rx_probe_req.bssid,
3410                                       data->rx_probe_req.ie,
3411                                       data->rx_probe_req.ie_len,
3412                                       data->rx_probe_req.ssi_signal);
3413                 break;
3414         case EVENT_REMAIN_ON_CHANNEL:
3415 #ifdef CONFIG_OFFCHANNEL
3416                 offchannel_remain_on_channel_cb(
3417                         wpa_s, data->remain_on_channel.freq,
3418                         data->remain_on_channel.duration);
3419 #endif /* CONFIG_OFFCHANNEL */
3420                 wpas_p2p_remain_on_channel_cb(
3421                         wpa_s, data->remain_on_channel.freq,
3422                         data->remain_on_channel.duration);
3423                 break;
3424         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3425 #ifdef CONFIG_OFFCHANNEL
3426                 offchannel_cancel_remain_on_channel_cb(
3427                         wpa_s, data->remain_on_channel.freq);
3428 #endif /* CONFIG_OFFCHANNEL */
3429                 wpas_p2p_cancel_remain_on_channel_cb(
3430                         wpa_s, data->remain_on_channel.freq);
3431                 break;
3432         case EVENT_EAPOL_RX:
3433                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3434                                         data->eapol_rx.data,
3435                                         data->eapol_rx.data_len);
3436                 break;
3437         case EVENT_SIGNAL_CHANGE:
3438                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3439                         "above=%d signal=%d noise=%d txrate=%d",
3440                         data->signal_change.above_threshold,
3441                         data->signal_change.current_signal,
3442                         data->signal_change.current_noise,
3443                         data->signal_change.current_txrate);
3444                 wpa_bss_update_level(wpa_s->current_bss,
3445                                      data->signal_change.current_signal);
3446                 bgscan_notify_signal_change(
3447                         wpa_s, data->signal_change.above_threshold,
3448                         data->signal_change.current_signal,
3449                         data->signal_change.current_noise,
3450                         data->signal_change.current_txrate);
3451                 break;
3452         case EVENT_INTERFACE_ENABLED:
3453                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3454                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3455                         wpa_supplicant_update_mac_addr(wpa_s);
3456                         if (wpa_s->p2p_mgmt) {
3457                                 wpa_supplicant_set_state(wpa_s,
3458                                                          WPA_DISCONNECTED);
3459                                 break;
3460                         }
3461
3462 #ifdef CONFIG_AP
3463                         if (!wpa_s->ap_iface) {
3464                                 wpa_supplicant_set_state(wpa_s,
3465                                                          WPA_DISCONNECTED);
3466                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3467                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3468                         } else
3469                                 wpa_supplicant_set_state(wpa_s,
3470                                                          WPA_COMPLETED);
3471 #else /* CONFIG_AP */
3472                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3473                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3474 #endif /* CONFIG_AP */
3475                 }
3476                 break;
3477         case EVENT_INTERFACE_DISABLED:
3478                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3479 #ifdef CONFIG_P2P
3480                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3481                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3482                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3483                         /*
3484                          * Mark interface disabled if this happens to end up not
3485                          * being removed as a separate P2P group interface.
3486                          */
3487                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3488                         /*
3489                          * The interface was externally disabled. Remove
3490                          * it assuming an external entity will start a
3491                          * new session if needed.
3492                          */
3493                         if (wpa_s->current_ssid &&
3494                             wpa_s->current_ssid->p2p_group)
3495                                 wpas_p2p_interface_unavailable(wpa_s);
3496                         else
3497                                 wpas_p2p_disconnect(wpa_s);
3498                         /*
3499                          * wpa_s instance may have been freed, so must not use
3500                          * it here anymore.
3501                          */
3502                         break;
3503                 }
3504                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3505                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3506                         /* This radio work will be cancelled, so clear P2P
3507                          * state as well.
3508                          */
3509                         p2p_stop_find(wpa_s->global->p2p);
3510                 }
3511 #endif /* CONFIG_P2P */
3512
3513                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3514                         /*
3515                          * Indicate disconnection to keep ctrl_iface events
3516                          * consistent.
3517                          */
3518                         wpa_supplicant_event_disassoc(
3519                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3520                 }
3521                 wpa_supplicant_mark_disassoc(wpa_s);
3522                 radio_remove_works(wpa_s, NULL, 0);
3523
3524                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3525                 break;
3526         case EVENT_CHANNEL_LIST_CHANGED:
3527                 wpa_supplicant_update_channel_list(
3528                         wpa_s, &data->channel_list_changed);
3529                 break;
3530         case EVENT_INTERFACE_UNAVAILABLE:
3531                 wpas_p2p_interface_unavailable(wpa_s);
3532                 break;
3533         case EVENT_BEST_CHANNEL:
3534                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3535                         "(%d %d %d)",
3536                         data->best_chan.freq_24, data->best_chan.freq_5,
3537                         data->best_chan.freq_overall);
3538                 wpa_s->best_24_freq = data->best_chan.freq_24;
3539                 wpa_s->best_5_freq = data->best_chan.freq_5;
3540                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3541                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3542                                               data->best_chan.freq_5,
3543                                               data->best_chan.freq_overall);
3544                 break;
3545         case EVENT_UNPROT_DEAUTH:
3546                 wpa_supplicant_event_unprot_deauth(wpa_s,
3547                                                    &data->unprot_deauth);
3548                 break;
3549         case EVENT_UNPROT_DISASSOC:
3550                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3551                                                      &data->unprot_disassoc);
3552                 break;
3553         case EVENT_STATION_LOW_ACK:
3554 #ifdef CONFIG_AP
3555                 if (wpa_s->ap_iface && data)
3556                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3557                                                   data->low_ack.addr);
3558 #endif /* CONFIG_AP */
3559 #ifdef CONFIG_TDLS
3560                 if (data)
3561                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3562                                                           data->low_ack.addr);
3563 #endif /* CONFIG_TDLS */
3564                 break;
3565         case EVENT_IBSS_PEER_LOST:
3566 #ifdef CONFIG_IBSS_RSN
3567                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3568 #endif /* CONFIG_IBSS_RSN */
3569                 break;
3570         case EVENT_DRIVER_GTK_REKEY:
3571                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3572                               wpa_s->bssid, ETH_ALEN))
3573                         break;
3574                 if (!wpa_s->wpa)
3575                         break;
3576                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3577                                          data->driver_gtk_rekey.replay_ctr);
3578                 break;
3579         case EVENT_SCHED_SCAN_STOPPED:
3580                 wpa_s->pno = 0;
3581                 wpa_s->sched_scanning = 0;
3582                 wpa_supplicant_notify_scanning(wpa_s, 0);
3583
3584                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3585                         break;
3586
3587                 /*
3588                  * Start a new sched scan to continue searching for more SSIDs
3589                  * either if timed out or PNO schedule scan is pending.
3590                  */
3591                 if (wpa_s->sched_scan_timed_out) {
3592                         wpa_supplicant_req_sched_scan(wpa_s);
3593                 } else if (wpa_s->pno_sched_pending) {
3594                         wpa_s->pno_sched_pending = 0;
3595                         wpas_start_pno(wpa_s);
3596                 }
3597
3598                 break;
3599         case EVENT_WPS_BUTTON_PUSHED:
3600 #ifdef CONFIG_WPS
3601                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3602 #endif /* CONFIG_WPS */
3603                 break;
3604         case EVENT_AVOID_FREQUENCIES:
3605                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3606                 break;
3607         case EVENT_CONNECT_FAILED_REASON:
3608 #ifdef CONFIG_AP
3609                 if (!wpa_s->ap_iface || !data)
3610                         break;
3611                 hostapd_event_connect_failed_reason(
3612                         wpa_s->ap_iface->bss[0],
3613                         data->connect_failed_reason.addr,
3614                         data->connect_failed_reason.code);
3615 #endif /* CONFIG_AP */
3616                 break;
3617         case EVENT_NEW_PEER_CANDIDATE:
3618 #ifdef CONFIG_MESH
3619                 if (!wpa_s->ifmsh || !data)
3620                         break;
3621                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3622                                      data->mesh_peer.ies,
3623                                      data->mesh_peer.ie_len);
3624 #endif /* CONFIG_MESH */
3625                 break;
3626         default:
3627                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3628                 break;
3629         }
3630 }